Which factor contributed to growing conflict over slavery from the 1820's through the 1850's?
a. falling crop prices
b. rapid industrialization
c. rising tariff rates
d. territorial expansion

What person was influential and trying to ease race relations in america during the early part of the twentieth century

List three reasons why explorers began to explore new, and old areas. [[ps: doesn't explicitly say where. i think it's more in general.

Which statement describes an important outcome of the congress of vienna? a. napoleon launched his final european military campaigns. b. european states had their borders clearly defined. c. jewish people were given equal right in germanic states d. the slave trade became increasingly important to european economies.